github.com/rajveermalviya/gamen@v0.1.2-0.20220930195403-9be15877c1aa/internal/xkbcommon/include/X11/extensions/syncstr.h (about)

     1  /*
     2  
     3  Copyright 1991, 1993, 1994, 1998  The Open Group
     4  
     5  Permission to use, copy, modify, distribute, and sell this software and its
     6  documentation for any purpose is hereby granted without fee, provided that
     7  the above copyright notice appear in all copies and that both that
     8  copyright notice and this permission notice appear in supporting
     9  documentation.
    10  
    11  The above copyright notice and this permission notice shall be included in
    12  all copies or substantial portions of the Software.
    13  
    14  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
    17  OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
    18  AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    19  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    20  
    21  Except as contained in this notice, the name of The Open Group shall not be
    22  used in advertising or otherwise to promote the sale, use or other dealings
    23  in this Software without prior written authorization from The Open Group.
    24  
    25  */
    26  
    27  /***********************************************************
    28  Copyright 1991,1993 by Digital Equipment Corporation, Maynard, Massachusetts,
    29  and Olivetti Research Limited, Cambridge, England.
    30  
    31                          All Rights Reserved
    32  
    33  Permission to use, copy, modify, and distribute this software and its
    34  documentation for any purpose and without fee is hereby granted,
    35  provided that the above copyright notice appear in all copies and that
    36  both that copyright notice and this permission notice appear in
    37  supporting documentation, and that the names of Digital or Olivetti
    38  not be used in advertising or publicity pertaining to distribution of the
    39  software without specific, written prior permission.
    40  
    41  DIGITAL AND OLIVETTI DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
    42  SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
    43  FITNESS, IN NO EVENT SHALL THEY BE LIABLE FOR ANY SPECIAL, INDIRECT OR
    44  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
    45  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
    46  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
    47  PERFORMANCE OF THIS SOFTWARE.
    48  
    49  ******************************************************************/
    50  
    51  #ifndef _SYNCSTR_H_
    52  #define _SYNCSTR_H_
    53  
    54  #include <X11/extensions/syncproto.h>
    55  
    56  #ifdef _SYNC_SERVER
    57  
    58  #define CARD64 XSyncValue /* XXX temporary! need real 64 bit values for Alpha */
    59  
    60  typedef struct _SyncCounter {
    61      ClientPtr		client;	/* Owning client. 0 for system counters */
    62      XSyncCounter	id;		/* resource ID */
    63      CARD64		value;		/* counter value */
    64      struct _SyncTriggerList *pTriglist;	/* list of triggers */
    65      Bool		beingDestroyed; /* in process of going away */
    66      struct _SysCounterInfo *pSysCounterInfo; /* NULL if not a system counter */
    67  } SyncCounter;
    68  
    69  /*
    70   * The System Counter interface
    71   */
    72  
    73  typedef enum {
    74      XSyncCounterNeverChanges,
    75      XSyncCounterNeverIncreases,
    76      XSyncCounterNeverDecreases,
    77      XSyncCounterUnrestricted
    78  } SyncCounterType;
    79  
    80  typedef struct _SysCounterInfo {
    81      char	*name;
    82      CARD64	resolution;
    83      CARD64	bracket_greater;
    84      CARD64	bracket_less;
    85      SyncCounterType counterType;  /* how can this counter change */
    86      void        (*QueryValue)(
    87  			      pointer /*pCounter*/,
    88  			      CARD64 * /*freshvalue*/
    89  );
    90      void	(*BracketValues)(
    91  				 pointer /*pCounter*/,
    92  				 CARD64 * /*lessthan*/,
    93  				 CARD64 * /*greaterthan*/
    94  );
    95  } SysCounterInfo;
    96  
    97  
    98  
    99  typedef struct _SyncTrigger {
   100      SyncCounter *pCounter;
   101      CARD64	wait_value;	/* wait value */
   102      unsigned int value_type;     /* Absolute or Relative */
   103      unsigned int test_type;	/* transition or Comparison type */
   104      CARD64	test_value;	/* trigger event threshold value */
   105      Bool	(*CheckTrigger)(
   106  				struct _SyncTrigger * /*pTrigger*/,
   107  				CARD64 /*newval*/
   108  				);
   109      void	(*TriggerFired)(
   110  				struct _SyncTrigger * /*pTrigger*/
   111  				);
   112      void	(*CounterDestroyed)(
   113  				struct _SyncTrigger * /*pTrigger*/
   114  				    );
   115  } SyncTrigger;
   116  
   117  typedef struct _SyncTriggerList {
   118      SyncTrigger *pTrigger;
   119      struct _SyncTriggerList *next;
   120  } SyncTriggerList;
   121  
   122  typedef struct _SyncAlarmClientList {
   123      ClientPtr	client;
   124      XID		delete_id;
   125      struct _SyncAlarmClientList *next;
   126  } SyncAlarmClientList;
   127  
   128  typedef struct _SyncAlarm {
   129      SyncTrigger trigger;
   130      ClientPtr	client;
   131      XSyncAlarm 	alarm_id;
   132      CARD64	delta;
   133      int		events;
   134      int		state;
   135      SyncAlarmClientList *pEventClients;
   136  } SyncAlarm;
   137  
   138  typedef struct {
   139      ClientPtr	client;
   140      CARD32 	delete_id;
   141      int		num_waitconditions;
   142  } SyncAwaitHeader;
   143  
   144  typedef struct {
   145      SyncTrigger trigger;
   146      CARD64	event_threshold;
   147      SyncAwaitHeader *pHeader;
   148  } SyncAwait;
   149  
   150  typedef union {
   151      SyncAwaitHeader header;
   152      SyncAwait	    await;
   153  } SyncAwaitUnion;
   154  
   155  
   156  extern pointer SyncCreateSystemCounter(
   157      char *	/* name */,
   158      CARD64  	/* initial_value */,
   159      CARD64  	/* resolution */,
   160      SyncCounterType /* change characterization */,
   161      void        (* /*QueryValue*/ ) (
   162          pointer /* pCounter */,
   163          CARD64 * /* pValue_return */), /* XXX prototype */
   164      void        (* /*BracketValues*/) (
   165          pointer /* pCounter */,
   166          CARD64 * /* pbracket_less */,
   167          CARD64 * /* pbracket_greater */)
   168  );
   169  
   170  extern void SyncChangeCounter(
   171      SyncCounter *	/* pCounter*/,
   172      CARD64  		/* new_value */
   173  );
   174  
   175  extern void SyncDestroySystemCounter(
   176      pointer pCounter
   177  );
   178  extern void InitServertime(void);
   179  
   180  #endif /* _SYNC_SERVER */
   181  
   182  #endif /* _SYNCSTR_H_ */